Bicycle Transportation AllianceThe Bicycle Transportation Alliance is a non-profit bicycle advocacy organization based in Portland, OR.
The BTA creates healthy, sustainable communities by making bicycling safer, more convenient and more accessible.

http://bta4bikes.org/

Transportation Alternatives, NYCTransportation Alternatives is a member-supported New York City-area citizens group working for better bicycling, walking and public transit, and fewer cars. We want safer, calmer neighborhood streets and car-free parks. T.A. is a registered 501(c)(3) nonprofit organization.